eliminated qbyte type, now uses unsigned char throughout the engine for this purpose
[divverent/darkplaces.git] / sys_win.c
1 /*
2 Copyright (C) 1996-1997 Id Software, Inc.
3
4 This program is free software; you can redistribute it and/or
5 modify it under the terms of the GNU General Public License
6 as published by the Free Software Foundation; either version 2
7 of the License, or (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13 See the GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18
19 */
20 // sys_win.c -- Win32 system interface code
21
22 #include "quakedef.h"
23 #include <windows.h>
24 #include <dsound.h>
25 #include "errno.h"
26 #include "resource.h"
27 #include "conproc.h"
28 #include "direct.h"
29
30 extern void S_BlockSound (void);
31
32 cvar_t sys_usetimegettime = {CVAR_SAVE, "sys_usetimegettime", "1"};
33
34 HANDLE                          hinput, houtput;
35
36 static HANDLE   tevent;
37 static HANDLE   hFile;
38 static HANDLE   heventParent;
39 static HANDLE   heventChild;
40
41
42 /*
43 ===============================================================================
44
45 SYSTEM IO
46
47 ===============================================================================
48 */
49
50 void Sys_Error (const char *error, ...)
51 {
52         va_list         argptr;
53         char            text[1024];
54         static int      in_sys_error0 = 0;
55         static int      in_sys_error1 = 0;
56         static int      in_sys_error2 = 0;
57         static int      in_sys_error3 = 0;
58
59         va_start (argptr, error);
60         dpvsnprintf (text, sizeof (text), error, argptr);
61         va_end (argptr);
62
63         Con_Printf ("Quake Error: %s\n", text);
64
65         // close video so the message box is visible, unless we already tried that
66         if (!in_sys_error0 && cls.state != ca_dedicated)
67         {
68                 in_sys_error0 = 1;
69                 VID_Shutdown();
70         }
71
72         if (!in_sys_error3 && cls.state != ca_dedicated)
73         {
74                 in_sys_error3 = true;
75                 MessageBox(NULL, text, "Quake Error", MB_OK | MB_SETFOREGROUND | MB_ICONSTOP);
76         }
77
78         if (!in_sys_error1)
79         {
80                 in_sys_error1 = 1;
81                 Host_Shutdown ();
82         }
83
84 // shut down QHOST hooks if necessary
85         if (!in_sys_error2)
86         {
87                 in_sys_error2 = 1;
88                 Sys_Shutdown ();
89         }
90
91         exit (1);
92 }
93
94 void Sys_Shutdown (void)
95 {
96         if (tevent)
97                 CloseHandle (tevent);
98
99         if (cls.state == ca_dedicated)
100                 FreeConsole ();
101
102 // shut down QHOST hooks if necessary
103         DeinitConProc ();
104 }
105
106 void Sys_PrintToTerminal(const char *text)
107 {
108         DWORD dummy;
109         extern HANDLE houtput;
110         if (cls.state == ca_dedicated)
111                 WriteFile(houtput, text, (DWORD) strlen(text), &dummy, NULL);
112 }
113
114 /*
115 ================
116 Sys_DoubleTime
117 ================
118 */
119 double Sys_DoubleTime (void)
120 {
121         static int first = true;
122         static double oldtime = 0.0, curtime = 0.0;
123         double newtime;
124         // LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
125         if (sys_usetimegettime.integer)
126         {
127                 static int firsttimegettime = true;
128                 // timeGetTime
129                 // platform:
130                 // Windows 95/98/ME/NT/2000/XP
131                 // features:
132                 // reasonable accuracy (millisecond)
133                 // issues:
134                 // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
135
136                 // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
137                 if (firsttimegettime)
138                 {
139                         timeBeginPeriod (1);
140                         firsttimegettime = false;
141                 }
142
143                 newtime = (double) timeGetTime () / 1000.0;
144         }
145         else
146         {
147                 // QueryPerformanceCounter
148                 // platform:
149                 // Windows 95/98/ME/NT/2000/XP
150                 // features:
151                 // very accurate (CPU cycles)
152                 // known issues:
153                 // does not necessarily match realtime too well (tends to get faster and faster in win98)
154                 // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
155                 double timescale;
156                 LARGE_INTEGER PerformanceFreq;
157                 LARGE_INTEGER PerformanceCount;
158
159                 if (!QueryPerformanceFrequency (&PerformanceFreq))
160                 {
161                         Con_Printf ("No hardware timer available");
162                         // fall back to timeGetTime
163                         Cvar_SetValueQuick(&sys_usetimegettime, true);
164                         return Sys_DoubleTime();
165                 }
166                 QueryPerformanceCounter (&PerformanceCount);
167
168                 #ifdef __BORLANDC__
169                 timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
170                 newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
171                 #else
172                 timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
173                 newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
174                 #endif
175         }
176
177         if (first)
178         {
179                 first = false;
180                 oldtime = newtime;
181         }
182
183         if (newtime < oldtime)
184         {
185                 // warn if it's significant
186                 if (newtime - oldtime < -0.01)
187                         Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
188         }
189         else
190                 curtime += newtime - oldtime;
191         oldtime = newtime;
192
193         return curtime;
194 }
195
196
197 char *Sys_ConsoleInput (void)
198 {
199         static char text[256];
200         static int len;
201         INPUT_RECORD recs[1024];
202         int ch;
203         DWORD numread, numevents, dummy;
204
205         if (cls.state != ca_dedicated)
206                 return NULL;
207
208
209         for ( ;; )
210         {
211                 if (!GetNumberOfConsoleInputEvents (hinput, &numevents))
212                         Sys_Error ("Error getting # of console events");
213
214                 if (numevents <= 0)
215                         break;
216
217                 if (!ReadConsoleInput(hinput, recs, 1, &numread))
218                         Sys_Error ("Error reading console input");
219
220                 if (numread != 1)
221                         Sys_Error ("Couldn't read console input");
222
223                 if (recs[0].EventType == KEY_EVENT)
224                 {
225                         if (!recs[0].Event.KeyEvent.bKeyDown)
226                         {
227                                 ch = recs[0].Event.KeyEvent.uChar.AsciiChar;
228
229                                 switch (ch)
230                                 {
231                                         case '\r':
232                                                 WriteFile(houtput, "\r\n", 2, &dummy, NULL);
233
234                                                 if (len)
235                                                 {
236                                                         text[len] = 0;
237                                                         len = 0;
238                                                         return text;
239                                                 }
240
241                                                 break;
242
243                                         case '\b':
244                                                 WriteFile(houtput, "\b \b", 3, &dummy, NULL);
245                                                 if (len)
246                                                 {
247                                                         len--;
248                                                 }
249                                                 break;
250
251                                         default:
252                                                 if (ch >= ' ')
253                                                 {
254                                                         WriteFile(houtput, &ch, 1, &dummy, NULL);
255                                                         text[len] = ch;
256                                                         len = (len + 1) & 0xff;
257                                                 }
258
259                                                 break;
260
261                                 }
262                         }
263                 }
264         }
265
266         return NULL;
267 }
268
269 void Sys_Sleep(int milliseconds)
270 {
271         if (milliseconds < 1)
272                 milliseconds = 1;
273         Sleep(milliseconds);
274 }
275
276 char *Sys_GetClipboardData (void)
277 {
278         char *data = NULL;
279         char *cliptext;
280
281         if (OpenClipboard (NULL) != 0)
282         {
283                 HANDLE hClipboardData;
284
285                 if ((hClipboardData = GetClipboardData (CF_TEXT)) != 0)
286                 {
287                         if ((cliptext = GlobalLock (hClipboardData)) != 0)
288                         {
289                                 data = malloc (GlobalSize(hClipboardData)+1);
290                                 strcpy (data, cliptext);
291                                 GlobalUnlock (hClipboardData);
292                         }
293                 }
294                 CloseClipboard ();
295         }
296         return data;
297 }
298
299 void Sys_InitConsole (void)
300 {
301         int t;
302
303         // initialize the windows dedicated server console if needed
304         tevent = CreateEvent(NULL, false, false, NULL);
305
306         if (!tevent)
307                 Sys_Error ("Couldn't create event");
308
309         // LordHavoc: can't check cls.state because it hasn't been initialized yet
310         // if (cls.state == ca_dedicated)
311         if (COM_CheckParm("-dedicated"))
312         {
313                 if (!AllocConsole ())
314                         Sys_Error ("Couldn't create dedicated server console");
315
316                 hinput = GetStdHandle (STD_INPUT_HANDLE);
317                 houtput = GetStdHandle (STD_OUTPUT_HANDLE);
318
319 #ifdef WIN64
320 #define atoi _atoi64
321 #endif
322         // give QHOST a chance to hook into the console
323                 if ((t = COM_CheckParm ("-HFILE")) > 0)
324                 {
325                         if (t < com_argc)
326                                 hFile = (HANDLE)atoi (com_argv[t+1]);
327                 }
328
329                 if ((t = COM_CheckParm ("-HPARENT")) > 0)
330                 {
331                         if (t < com_argc)
332                                 heventParent = (HANDLE)atoi (com_argv[t+1]);
333                 }
334
335                 if ((t = COM_CheckParm ("-HCHILD")) > 0)
336                 {
337                         if (t < com_argc)
338                                 heventChild = (HANDLE)atoi (com_argv[t+1]);
339                 }
340
341                 InitConProc (hFile, heventParent, heventChild);
342         }
343
344 // because sound is off until we become active
345         S_BlockSound ();
346 }
347
348 void Sys_Init_Commands (void)
349 {
350         Cvar_RegisterVariable(&sys_usetimegettime);
351 }
352
353 /*
354 ==============================================================================
355
356 WINDOWS CRAP
357
358 ==============================================================================
359 */
360
361
362 /*
363 ==================
364 WinMain
365 ==================
366 */
367 HINSTANCE       global_hInstance;
368 const char      *argv[MAX_NUM_ARGVS];
369 char            program_name[MAX_OSPATH];
370
371 int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
372 {
373         double frameoldtime, framenewtime;
374         MEMORYSTATUS lpBuffer;
375
376         /* previous instances do not exist in Win32 */
377         if (hPrevInstance)
378                 return 0;
379
380         global_hInstance = hInstance;
381
382         lpBuffer.dwLength = sizeof(MEMORYSTATUS);
383         GlobalMemoryStatus (&lpBuffer);
384
385         program_name[sizeof(program_name)-1] = 0;
386         GetModuleFileNameA(NULL, program_name, sizeof(program_name) - 1);
387
388         com_argc = 1;
389         com_argv = argv;
390         argv[0] = program_name;
391
392         // FIXME: this tokenizer is rather redundent, call a more general one
393         while (*lpCmdLine && (com_argc < MAX_NUM_ARGVS))
394         {
395                 while (*lpCmdLine && *lpCmdLine <= ' ')
396                         lpCmdLine++;
397
398                 if (!*lpCmdLine)
399                         break;
400
401                 if (*lpCmdLine == '\"')
402                 {
403                         // quoted string
404                         lpCmdLine++;
405                         argv[com_argc] = lpCmdLine;
406                         com_argc++;
407                         while (*lpCmdLine && (*lpCmdLine != '\"'))
408                                 lpCmdLine++;
409                 }
410                 else
411                 {
412                         // unquoted word
413                         argv[com_argc] = lpCmdLine;
414                         com_argc++;
415                         while (*lpCmdLine && *lpCmdLine > ' ')
416                                 lpCmdLine++;
417                 }
418
419                 if (*lpCmdLine)
420                 {
421                         *lpCmdLine = 0;
422                         lpCmdLine++;
423                 }
424         }
425
426         Host_Init ();
427
428         frameoldtime = Sys_DoubleTime ();
429
430         /* main window message loop */
431         while (1)
432         {
433                 framenewtime = Sys_DoubleTime ();
434                 Host_Frame (framenewtime - frameoldtime);
435                 frameoldtime = framenewtime;
436         }
437
438         /* return success of application */
439         return true;
440 }